//                           _       _
// __      _____  __ ___   ___  __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
//  \ V  V /  __/ (_| |\ V /| | (_| | ||  __/
//   \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
//  Copyright © 2016 - 2023 Weaviate B.V. All rights reserved.
//
//  CONTACT: hello@weaviate.io
//

package modopenai

import (
	"context"

	"github.com/weaviate/weaviate/entities/models"
	"github.com/weaviate/weaviate/entities/modulecapabilities"
	"github.com/weaviate/weaviate/entities/moduletools"
	"github.com/weaviate/weaviate/entities/schema"
	"github.com/weaviate/weaviate/modules/text2vec-openai/vectorizer"
)

func (m *OpenAIModule) ClassConfigDefaults() map[string]interface{} {
	return map[string]interface{}{
		"vectorizeClassName": vectorizer.DefaultVectorizeClassName,
		"type":               vectorizer.DefaultOpenAIDocumentType,
		"model":              vectorizer.DefaultOpenAIModel,
		"modelVersion": vectorizer.PickDefaultModelVersion(vectorizer.DefaultOpenAIModel,
			vectorizer.DefaultOpenAIDocumentType),
	}
}

func (m *OpenAIModule) PropertyConfigDefaults(
	dt *schema.DataType,
) map[string]interface{} {
	return map[string]interface{}{
		"skip":                  !vectorizer.DefaultPropertyIndexed,
		"vectorizePropertyName": vectorizer.DefaultVectorizePropertyName,
	}
}

func (m *OpenAIModule) ValidateClass(ctx context.Context,
	class *models.Class, cfg moduletools.ClassConfig,
) error {
	settings := vectorizer.NewClassSettings(cfg)
	return settings.Validate(class)
}

var _ = modulecapabilities.ClassConfigurator(New())

// type ConfigValidator struct {
// 	logger logrus.FieldLogger
// }

// type ClassSettings interface {
// 	VectorizeClassName() bool
// 	VectorizePropertyName(propName string) bool
// 	PropertyIndexed(propName string) bool
// }

// func NewConfigValidator(logger logrus.FieldLogger) *ConfigValidator {
// 	return &ConfigValidator{logger: logger}
// }

// func (cv *ConfigValidator) Do(ctx context.Context, class *models.Class,
// 	cfg moduletools.ClassConfig, settings ClassSettings) error {
// 	// In text2vec-openai (as opposed to e.g. text2vec-contextionary) the
// 	// assumption is that the models will be able to deal with any words, even
// 	// previously unseen ones. Therefore we do not need to validate individual
// 	// properties, but only the overall "index state"

// 	if err := cv.validateIndexState(ctx, class, settings); err != nil {
// 		return errors.Errorf("invalid combination of properties")
// 	}

// 	cv.checkForPossibilityOfDuplicateVectors(ctx, class, settings)

// 	return nil
// }

// func (cv *ConfigValidator) validateIndexState(ctx context.Context,
// 	class *models.Class, settings ClassSettings) error {
// 	if settings.VectorizeClassName() {
// 		// if the user chooses to vectorize the classname, vector-building will
// 		// always be possible, no need to investigate further

// 		return nil
// 	}

// 	// search if there is at least one indexed, string/text prop. If found pass
// 	// validation
// 	for _, prop := range class.Properties {
// 		if len(prop.DataType) < 1 {
// 			return errors.Errorf("property %s must have at least one datatype: "+
// 				"got %v", prop.Name, prop.DataType)
// 		}

// 		if prop.DataType[0] != string(schema.DataTypeText) {
// 			// we can only vectorize text-like props
// 			continue
// 		}

// 		if settings.PropertyIndexed(prop.Name) {
// 			// found at least one, this is a valid schema
// 			return nil
// 		}
// 	}

// 	return fmt.Errorf("invalid properties: didn't find a single property which is " +
// 		"of type string or text and is not excluded from indexing. In addition the " +
// 		"class name is excluded from vectorization as well, meaning that it cannot be " +
// 		"used to determine the vector position. To fix this, set 'vectorizeClassName' " +
// 		"to true if the class name is contextionary-valid. Alternatively add at least " +
// 		"contextionary-valid text/string property which is not excluded from " +
// 		"indexing.")
// }

// func (cv *ConfigValidator) checkForPossibilityOfDuplicateVectors(
// 	ctx context.Context, class *models.Class, settings ClassSettings) {
// 	if !settings.VectorizeClassName() {
// 		// if the user choses not to vectorize the class name, this means they must
// 		// have chosen something else to vectorize, otherwise the validation would
// 		// have error'd before we ever got here. We can skip further checking.

// 		return
// 	}

// 	// search if there is at least one indexed, string/text prop. If found exit
// 	for _, prop := range class.Properties {
// 		// length check skipped, because validation has already passed
// 		if prop.DataType[0] != string(schema.DataTypeText) {
// 			// we can only vectorize text-like props
// 			continue
// 		}

// 		if settings.PropertyIndexed(prop.Name) {
// 			// found at least one
// 			return
// 		}
// 	}

// 	cv.logger.WithField("module", "text2vec-openai").
// 		WithField("class", class.Class).
// 		Warnf("text2vec-openai: Class %q does not have any properties "+
// 			"indexed (or only non text-properties indexed) and the vector position is "+
// 			"only determined by the class name. Each object will end up with the same "+
// 			"vector which leads to a severe performance penalty on imports. Consider "+
// 			"setting vectorIndexConfig.skip=true for this property", class.Class)
// }
